AL West Preview – Astros Pitchers, Hunter Brown and the Boys

Since their first World Series run in 2017, the Astros have produced, traded for, and developed a huge amount of pitching talent. From Cy Young winners like Dallas Keuchel and Gerrit Cole, to future Hall of Famers like Zack Greinke and Justin Verlander, the Astros have had no shortage of pitching excellence in their domination of the AL over the past decade or so.

Now, the Astros’ rotation of 2026 has certainly seen better days. Hunter Brown remains one of the top-end arms in the AL, if not MLB, but outside of him are major question marks, including unknown international talent, baby-faced rookies, and former top prospects who bounce between the bullpen and the rotation as needed.

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Last year, the Astros strung together some solid numbers:

• ERA 3.86 – 11th in the league

• Earned Runs 619 – 19th in the league

• Walks 508 – 16th in the league

• Strikeouts 1504 – 2nd in the league

While the Astros were not the dominant force they’ve been in the past, they certainly gave the Mariners and the rest of the AL a run for their money. Fortunately for the Mariners, the Astros have had some major shake-ups in their rotation. While the addition of Tatsuya Imai may alleviate some of the issues that could arise, it’s hard to say whether Imai will be as good as some of the guys who have already departed.

Notable Departures and Injuries

Framber Valdez (LHP) signed as a free agent with the Detroit Tigers. While Valdez has been supplanted as the ace of the Astros’ staff, there’s no doubt that he was a core piece of the Astros’ rotation and will be sorely missed. We will see if Imai can successfully replace the hole in the rotation left by the left-hander.

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Hayden Wesneki (RHP) was acquired before the 2025 season as part of the Kyle Tucker trade. After making a handful of starts, he suffered a UCL tear, leading to Tommy John surgery. Wesneki is likely to return at some point this coming season, but with setbacks, it remains to be seen when that will be.

Ronel Blanco (RHP) had a breakout 2024, including a no-hitter, and was set to be a major part of the Astros’ rotation in 2025. However, early in the season, Blanco suffered a right elbow injury and underwent Tommy John surgery. The young phenom is expected to make his return after the 2026 All-Star break.

Notable Arrivals

Mike Burrows (RHP), Roddery Muñoz (RHP), Tatsuya Imai (RHP),  Trey McLoughlin (RHP), Ryan Weiss (RHP)

Minor League Contracts

Kelvin Herrera (RHP), Maximiliano Villanueva (RHP),  Ángel Alcántara (RHP), Ángel Brito (RHP), César Pastrano (RHP),  Thomas Sveyda (LHP)

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The Rotation

The obvious headline here is the departure of Framber Valdez and the arrival of Tatsuya Imai. In Valdez, the Astros have lost one of the top lefty starters in the league to the Tigers, a team they could absolutely see in October. However, the price tag was not as eye-popping as I would have expected: just 3 years, $115 million, and a mutual option for 2029. The feeling around the league seems to be that the market never really materialized for Valdez. While I’m sure the Astros likely made a competitive offer, following an incident late in the season in which Valdez seemingly crossed up his own catcher, major concerns and rumors about his personality and locker-room presence began to circulate in the league.

In response, the Astros have taken a chance and signed their first Japanese player, Tatsuya Imai. Imai has spent the last eight years rising through the Japanese NPB ranks and has strung together some very impressive seasons for the Seibu Lions, establishing himself as one of the top pitchers in Japan. The right-hander distinguished himself right away by stating his preference to “take down” Ohanti, Yamamoto, and Sasaki as opposed to joining them on the Dodgers. Imai has big shoes to fill in Houston, but could be just the stabilizing presence the rotation needs.

The Astros also sought out domestic rotation depth, acquiring Mike Burrows in a three-team trade earlier this offseason. Burrows had a solid 2025 in limited innings for the Pirates and has impressed so far in spring training for the Astros. So far this spring, Burrows has not allowed a run in 12 innings of work while striking out 15. While the projections have not been kind to Burrows despite his solid spring performance, the Astros have very recently had success turning an above-average Pirates starter into a bona fide Cy Young superstar. Let’s all hope he falls back to earth.

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The Arm Barn

There is seemingly very little turnover in the Astros bullpen going into 2026. The Astros have made a habit of bouncing young starter prospects into the bullpen, often for deep playoff runs. The two Bryans, Abreu and King, are both products of the Astros system. They have both turned in several excellent seasons and look to continue doing so in 2026. On top of the Bryans, the bullpen also looks to feature Ronel Blanco and Hayden Wesneski, both also Astros products, though they’re not likely to feature until later this year. As I mentioned earlier, Blanco threw a no-hitter in 2024, but isn’t expected to return until after the All-Star break. Similarly, Wesneski is also returning from a UCL injury; his return is unknown.

In more recent years, they have brought in veterans for the bullpen but generally avoid the journeymen who so often make up major league bullpens around the league. Josh Hader is a familiar name around the league and was a big get for the Astros’ pen back in 2024. Hader has served as the Astros’ closer since then, and nothing looks to change in 2026. The Astros also feature a variety of veteran arms. Enyel De Los Santos, Steven Okert, and Bennett Sousa are all journeymen who have featured for teams across the league in the past few years. They all have had some success out of the Astros’ pen recently and will likely be crucial for a team, rotation, and bullpen that has been plagued by injuries over the last few seasons.

Overall, the Astros do not have the dominant star-studded rotations of their golden years. Injuries and unhappy players have robbed some of their young prospects of crucial development and opportunity. Still, this season seems to mark a new start. New young talent, high-level contributors returning from injury, and potential cancers excised from the locker room; the Astros could be poised for a return to form in 2026.